Index: /trunk/src/VBox/VMM/VMMAll/NEMAllNativeTemplate-win.cpp.h
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/NEMAllNativeTemplate-win.cpp.h	(revision 73185)
+++ /trunk/src/VBox/VMM/VMMAll/NEMAllNativeTemplate-win.cpp.h	(revision 73186)
@@ -4149,10 +4149,18 @@
          */
         if (      (pVCpu->cpum.GstCtx.fExtrn & (CPUMCTX_EXTRN_ALL | CPUMCTX_EXTRN_NEM_WIN_MASK))
-               !=                 (CPUMCTX_EXTRN_ALL | CPUMCTX_EXTRN_NEM_WIN_MASK)
-            || pVCpu->nem.s.fDesiredInterruptWindows
-            || pVCpu->nem.s.fCurrentInterruptWindows != pVCpu->nem.s.fDesiredInterruptWindows)
-        {
+               !=                              (CPUMCTX_EXTRN_ALL | CPUMCTX_EXTRN_NEM_WIN_MASK)
+            || (  (   pVCpu->nem.s.fDesiredInterruptWindows
+                   || pVCpu->nem.s.fCurrentInterruptWindows != pVCpu->nem.s.fDesiredInterruptWindows)
 # ifdef NEM_WIN_TEMPLATE_MODE_OWN_RUN_API
-            Assert(pVCpu->nem.s.fHandleAndGetFlags != VID_MSHAGN_F_GET_NEXT_MESSAGE /* not running */);
+                && pVCpu->nem.s.fHandleAndGetFlags != VID_MSHAGN_F_GET_NEXT_MESSAGE /* not running */
+# endif
+               )
+           )
+        {
+# ifdef NEM_WIN_TEMPLATE_MODE_OWN_RUN_API
+            AssertMsg(pVCpu->nem.s.fHandleAndGetFlags != VID_MSHAGN_F_GET_NEXT_MESSAGE /* not running */,
+                      ("%#x fExtrn=%#RX64 (%#RX64) fDesiredInterruptWindows=%d fCurrentInterruptWindows=%#x vs %#x\n",
+                       pVCpu->nem.s.fHandleAndGetFlags, pVCpu->cpum.GstCtx.fExtrn, ~pVCpu->cpum.GstCtx.fExtrn & (CPUMCTX_EXTRN_ALL | CPUMCTX_EXTRN_NEM_WIN_MASK),
+                       pVCpu->nem.s.fDesiredInterruptWindows, pVCpu->nem.s.fCurrentInterruptWindows, pVCpu->nem.s.fDesiredInterruptWindows));
 # endif
 # ifdef IN_RING0